Flying-machine.



J. KIIBISH.

FLYING momma 0 MM a w g Q 5 L W Q .0 I. n P Q Q.

2 W L a mw .I n wv w g m M N a w mm m Q h aw n 2 a m J. KUBISH.

FLYING MACHINE.

APPLIOATION FILED we. 20, 1911.

Patented May 21, 1912 2 SHEETS-SHEET 2.

- WWW UNITED STATES PATENT OFFICE.

, JOHN KUBISH, OE INDIAN ORCHARD, MASSACHUSETTS.

FLYING-MACHINE.

Specification of Letters Patent.

Patented May 21,1912.

Application filed August 29, 1911. Serial No. 646,597.

To all whom it may concern:

Be it known that I, JorrN KUBIsH, a

citizen of the United States, residing at Indian Orchard, in the county of Hampden and State of Massachusetts, have invented new and useful Improvements in Flying- Machines, of which the following is a specification. p

This invention relates to flying machines, ind particularly to propelling means there- The object of the invention is to-provide a propelling mechanism embodying independent propellers and motors, which may -be operated simultaneously or independently and in the same or opposite directions, thereby securing greater safety and propelling efliciency, and in which the motors are disposed at a relatively low point upon the machine to promote stability.

Afurther object of the invention is to provide coaxially mounted propellers whose shafts are adapted to run easily and without interference and to be readily and convenlent lyset'up for use or removed for cleaning the hearings or' repairing any of the running parts. The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to th'eaccom panying drawings in which Figure 1 is a View in side elevation show ing the application of the invention to a monoplane. F1g. 2 is a side elevation of the drive gearing on an enlarged scale. Fig. 3

is a top plan view-thereof. Fig. 4: is a longitudinal section through the propellers,-

I shafts and bearings.

,Referring to the drawings, in which I have shown the application of my invention to a monoplane, 1 designates the main frame of the machine, upon which are supported separate and independent motors 2 and 3, arranged low down upon the frame of the machine to promote the stability thereof. On the drive shafts of the motors are sprocket gears 4 and 5 connected respectively by chains 16 and 7 with sprocket gears 8 and 9 upon the rear ends of a pair of concentric shafts 10 and 11 mounted upon the main frame above the motors. The shaft 11 is hollow to receive the shaft 10,

i which extends therethrough and projects therefrom at each end. The forward ends of the two shafts 10 and 11 carry propellers I 12 and 13, thehub of each propeller being apertured to fit upon the end of theshaft is carried by the-shoulder 17, and a bearing ring20 surrounds the shaft and rests against the shoulder 18. The forward end of the shaft 11 is expanded to provide a bearing casing 21 having a rear shoulder 22, within which casing is'disposed a bearing ring 23. The rings'20 and 23 have their opposing faces curved to form a race-way for antifriction bearing balls 24:, on which the forward end of the shaft 11 revolves, while the opposing faces of the rings 19 and 23 are similarly curved to form a race-way for bearing balls 25, which take up and limit the forward end thrust of the shaft 11 and insure a free and easy movement of the bearing parts upon each'other. At its rearend the shaft 10 is provided with a bearing ring 26 arranged within a bearingcollar or sleeve 27 on a portion of the main frame, said collar. or framehaving an outer inwardly projecting flange or shoulder 28.

Within the sleeve is arranged a bearing ring 29. for cooperation with .the bearing ring 26,.the meeting faces of. said rings being an nularly grooved to form a race-way for bearing balls 30. In rear of the ring 26 the end of the shaft 10 is threaded to receive a threaded abutment nut 31 carrying a bearing ring 32, arranged opposite the rear face of the ring 29', said rings being curved to forma race-way for'bearing balls 32, which limit the end thrust of the shaft 10 in a rearward direction. The nut 31 is held in fixed position by a, jam or lock nut 33 fixed, against casual disconnection by a locking pin 34tpassin'g1through the nut and shaft.

The shaft 11 is provided at front and rear with bearing rings35 and 36 arranged to turn within bearing sleeves 37 and 38 mounted-uponportions-of the main frame, within which sle'ev es arev disposed cooperating bearing rings 39 and 40, opposing faces of the respective pairs of bearing rings being curved to formrace-Ways for bearing balls 41 and 42, whereby the shaft 11 is journaled for easy and free revolublemovement. A collar 43 surrounds the shaft 10 and bears against the rear end of the shaft 11 to limit the rearward movement thereof, said collar being fixed in position by one or more set screws 44.

In practice, clutches 45 are provided for connecting the sprocket wheels 4: and 5 with the motor shafts and disconnecting the same therefrom, so that both propellers may be operated simultaneously, or either propeller operated independently of the other. It will be understood that the motors or driving shafts may be arranged to drive both propellers in the same direction or in opposite directions, as desired, and it will be seen that by providing each propeller with independent driving power one propeller may be kept constantly in action,

, should the motive power of theother fail,-

to maintain a continuity of flight of the machine. Of course, the propellers may be arranged at the front or rear of the main frame or at any other suitable "point, without departing from the spirit or sacrificing anjyI of the advantages of the invention.

aving thus described the invention,

. what I claim asnew is :-4

1. In a flying machine, a propeller mechanism comprising a pair of separate and independent motors, a pair of separate and independent shafts, said shafts comprising end of the inner shaft being provided with a.

flange and an annular shoulder in rear thereof, and the adjacent end of the hollow shaft being expanded to form a gear casing closed-at its forward end by said flange, an.

-outer bearing ring arranged within said I casing and engaging the inner wall of the. chamber, a bearing washer engaging the flange, anti-friction balls between said bearing ring and bearing washer, an inner bearvshafts, and propellers upon the forward ends of the shafts. v 2. In a flying machine, the combination of a main frame, a chassis, separate and independent motors mounted on the chassis, bearing brackets. mounted on the main frame, a hollow shaft mounted in certain of said bearing brackets, a second shaft extending through the outer or hollow shaft and journaled at its rear end in one of the brackets, said hollow shaft being provided at its forward end with an expanded portion forming a bearing chamber and the inner shaft being expanded at its forward end to form: a flange and a shoulder respectively closing and projecting into said passage, a pair of spaced concentric bearing rings disposed in said chamber and resting agalnst the inner wall thereof, the inner bearing-ring also having engagement with said shoulder, bearingballs between said biearing rings, bearing balls between the flange and outer bearing ring, a collar secured to the inner shaft and engaging the rear end of the outer shaft for cooperation with said flange to hold the inner shaft against endwise movement, gearing between the rear ends of said shafts and the motors, and propellers upon the forward ends of the shafts. v I

In testimony whereof I aflix my signature in presence of two witnesses.

JOHN KUBISH.

Witnesses:

THOMASH. KIRKLAND, CLAREN E A. ROGERS. 

